I love that idea! Up the playthrough requirements by 10x each time until a deposit is made. Brilliant!

Two points I want to bring up – these happen already, but wanted to just mention them...

1. You can't deposit while you are playing with free money. I learned that the hard way. I had used a free chip, gotten my winnings up to $500 and didn't want to dip into that, but wanted to play with $20 more ... and they took all my money away except for my $20.

2. Similarly, if you deposit money, you can't request a free chip.

The casinos would be smart to implement your idea because they would get more deposits from people wanting to get their playthrough requirements lowered. I'm not sure the casinos would go for "unlimited" free chips but perhaps for redeeming a coupon 5 times (20x the first time, 30x the next, etc.).

Cat